A group of GOP House members say they will push for a so-called 'Blue Lives Matter' bill in September

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Republican presidential candidate Donald Trump delivers a speech during the evening session on the fourth day of the Republican National Convention on July 21, 2016 at the Quicken Loans Arena in Cleveland, Ohio.

A new movement is emerging among Republican candidates and officeholders, contrasting the liberal-dominated Black Lives Matters movement, according to NBC News.

'Blue Lives Matter' has already become a rallying cry for some conservatives. The recent shootings of police officers, particularly the in Dallas, have pushed conservatives to insist there is a war on police officers.

The implication that Americans are overly hostile to law enforcement is the latest illustration of the debate over race, policing and criminal justice, as Trump’s popularity rises and the end of Barack Obama’s presidency comes to an end.

A group of GOP House members say they will push for a so-called 'Blue Lives Matter' bill in September that would make the intentional shooting of a police officer a hate crime. Some liberal groups argue such a provision is unnecessary since many states impose additional penalties on those who kill police officers.